Negative pressure suction system for prebaked anode green body forming device

Abstract

A negative pressure suction system for a prebaked anode green body forming device is provided with a mold, a pressing plate, a pressing head and a negative pressure suction system, the pressing head is of a cavity structure with an open upper end and is provided with a smoke outlet, and the negative pressure suction system penetrates through the pressing plate and extends into a cavity of the pressing head. In the prebaked anode green body forming process, calcined petroleum coke and asphalt are contained in a mold to form a pasty material, when a pressing plate moves downwards, a vacuum pump and a valve of a negative pressure suction system are started, the negative pressure state is maintained, asphalt smoke is generated, the pasty material is prevented from overflowing under the assistance of a negative pressure environment, and the pasty material is discharged and collected through a smoke outlet and a pipeline of a pressing head; after extrusion and vibration molding are finished, the valve is closed; and the pressing plate moves upwards to finish one-time machining. Due to the negative pressure environment and the suction operation provided by the negative pressure suction system, the problem that the formed prebaked anode green body has cracks or cracks due to the fact that the pasty material is filled with asphalt smoke is avoided.

Description

Technical Field

[0001] The utility model relates to the field of a pre-baked anode green body forming device, in particular to a negative pressure suction system for a pre-baked anode green body forming device. Background Art

[0002] In the molding process of prebaked anode green billets, the calcined petroleum coke is added with an appropriate proportion of asphalt and kneaded to form a paste, which is then added to the mold cavity. The mold is located on the vibration table of a vibration molding machine. Under the action of the vibration force, the paste is filled into the mold cavity, and at the same time, it is pressed by the pressing plate above the mold and the pressure head arranged at the lower end of the pressing plate to form a prebaked anode green billet. Since a high temperature environment needs to be maintained in the above molding process, the high temperature environment will cause the asphalt to gasify and form asphalt fume. During the pressing process of the pressing plate, due to the closed space formed between the pressing plate and the mold, the asphalt fume has nowhere to be discharged and will be filled into the paste, and then cracks or cracks will be formed in the molded prebaked anode green billet, which may cause the final prebaked anode product to be unqualified, various indicators to fail to meet the standards, or the quality of the finished product to be poor.

[0003] Since the current domestic stock of the above-mentioned molding devices is large, the optimization plan gives priority to modifying the original molding devices, which can greatly save costs. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a negative pressure suction system for a prebaked anode green body forming device, which solves the problem that asphalt fume in the prebaked anode green body during the forming process cannot be discharged, resulting in cracks or fissures inside the prebaked anode green body.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A negative pressure suction system for a pre-baked anode green body forming device is provided, wherein a mold is provided, a pressing plate is provided above the mold, a pressing head is connected to the lower end of the pressing plate, a plurality of pressing heads are provided, the pressing head is provided as a cavity structure with an open upper end, and the pressing plate is connected to the middle part of the bottom end of the cavity of the pressing head; a negative pressure suction structure is also provided, the negative pressure suction structure passes through the pressing plate and extends into the cavity of the pressing head, and the outer side of the negative pressure suction structure forms a sealed state with the pressing plate, and the negative pressure suction structure establishes a negative pressure environment for the closed space formed by the mold and the pressing plate and extracts smoke in the closed space; the pressing head is provided with a smoke exhaust port.

[0009] Preferably, the negative pressure suction structure is provided with a branch pipe, a main pipe, a vacuum tank, a vacuum pump, a valve, and an air collecting device; one end of the branch pipe passes through the pressure plate and extends into the cavity of the pressure head, and the outer side of the branch pipe forms a sealed state with the pressure plate; the other end of the branch pipe is connected to the main pipe, the main pipe is connected to the vacuum tank, the vacuum tank is connected to the vacuum pump, and the vacuum pump is connected to the air collecting device; a pressure gauge is provided on the vacuum tank; the valve is provided between the vacuum tank and the main pipe.

[0010] Preferably, a PLC control system is also provided, and the valve, pressure gauge and vacuum pump are electrically connected to the PLC control system respectively.

[0011] Preferably, the smoke exhaust port is configured as a smoke exhaust hole and a smoke exhaust notch, the smoke exhaust hole is configured at the lower end of the pressure head, the smoke exhaust notch is configured at the upper edge of the pressure head, and the smoke exhaust notch is configured in plurality, and the plurality of smoke exhaust notches are evenly arranged around the upper edge of the pressure head.

[0012] (III) Beneficial effects

[0013] The utility model provides a negative pressure suction system for a pre-baked anode green body forming device. It has the following beneficial effects:

[0014] By setting up a negative pressure suction structure, a negative pressure environment is established for the enclosed space formed by the mold and the pressing plate, and the flue gas in the enclosed space is extracted. At the same time, the negative pressure environment can promote the overflow of the asphalt fume in the paste, thereby avoiding the problem of asphalt fume filling the paste and causing cracks or cracks in the formed pre-baked anode green body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a side view schematic diagram of the pressing plate, pressing head and branch pipe of the utility model.

[0017] 1-pressing plate, 2-pressure head, 21-smoke exhaust port, 21a-smoke exhaust hole, 21b-smoke exhaust gap, 3-negative pressure suction structure, 31-branch pipe, 32-main pipe, 33-vacuum tank, 34-vacuum pump, 35-valve, 36-gas collecting device, 37-pressure gauge, 38-PLC control system. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0021] See also Figure 1-2 The embodiment of the utility model provides a technical solution: a negative pressure suction system for a pre-baked anode green body forming device, which is provided with a mold, a pressing plate 1 is provided above the mold, a pressure head 2 is connected to the lower end of the pressing plate 1, and the pressure head 2 is provided in plurality, and the pressure head 2 is provided as a cavity structure with an open upper end, and the pressing plate 1 is connected to the middle part of the bottom end of the cavity of the pressure head 2; a negative pressure suction structure (3) is also provided, and the negative pressure suction structure (3) passes through the pressing plate 1 and extends into the cavity of the pressure head 2, and the outer side of the negative pressure suction structure (3) forms a sealed state with the pressing plate 1, and the negative pressure suction structure (3) establishes a negative pressure environment for the closed space formed by the mold and the pressing plate 1 and extracts the smoke in the closed space; the pressure head 2 is provided with a smoke exhaust port 21. It should be particularly noted that: in this solution, the existing mold is utilized. By transforming the traditional pressure head 2 into a cavity structure with an open upper end, and opening a smoke exhaust port 21 on the pressure head 2, and opening a hole on the pressure plate 1, the negative pressure suction structure (3) can pass through the pressure plate 1 and enter the cavity of the pressure head 2. The existing equipment can be effectively utilized and local transformation can be carried out, which greatly reduces the cost; the negative pressure suction structure 3 establishes a negative pressure environment for the closed space formed by the pressure plate 1 and the mold, so that the asphalt fume generated in the paste formed by the mixture of petroleum coke and asphalt can better break through the restriction of the paste and overflow, and is extracted by the negative pressure suction structure 3 and discharged and collected.

[0022] See also Figure 1-2In this embodiment, the negative pressure suction structure is provided with a branch pipe 31, a main pipe 32, a vacuum tank 33, a vacuum pump 34, a valve 35, and an air collecting device 36; one end of the branch pipe 31 passes through the pressure plate 1 and extends into the cavity of the pressure head 2, and the outer side of the branch pipe 31 forms a sealed state with the pressure plate 1; the other end of the branch pipe 31 is connected to the main pipe 32, the main pipe 32 is connected to the vacuum tank 33, the vacuum tank 33 is connected to the vacuum pump 34, and the vacuum pump 34 is connected to the air collecting device 36; a pressure gauge 37 is provided on the vacuum tank 33; the valve 35 is arranged between the vacuum tank 33 and the main pipe 32.

[0023] See also Figure 1-2 In this embodiment, a PLC control system 38 is also provided, and the valve 35, the pressure gauge 37, and the vacuum pump 34 are electrically connected to the PLC control system 38. It should be noted that the PLC control system 38 can be set to realize automation and improve work efficiency.

[0024] See also Figure 1-2 In this embodiment, the smoke exhaust port 21 is configured as a smoke exhaust hole 21a and a smoke exhaust notch 21b. The smoke exhaust hole 21a is configured at the lower end of the pressure head 2, and the smoke exhaust notch 21b is configured at the upper edge of the pressure head 2. The smoke exhaust notch 21b is configured as a plurality of smoke exhaust notches 21b, and the plurality of smoke exhaust notches 21b are evenly arranged around the upper edge of the pressure head 2.

[0025] The working principle and use process of the utility model are as follows: when in use, in the pre-baked anode green body forming process, the mold is filled with calcined petroleum coke and asphalt mixed to form a paste. When the PLC control system 38 detects that the pressing plate 1 is moving downward, the vacuum pump 34 is started, the valve 35 is opened, and the pressure value of the pressure gauge 37 is maintained between -0.08Mpa and -0.09Mpa. During the extrusion and vibration forming process, asphalt fume is continuously generated in the closed space formed by the pressing plate 1 and the mold. With the assistance of the negative pressure environment, the asphalt fume breaks through the paste and overflows, and is discharged into the cavity through the exhaust hole 21a of the pressure head 2, or is discharged into the cavity through the exhaust notch 21b of the pressure head 2, and then enters the gas collecting device 36 through the branch pipe 31, the main pipe 32, the vacuum tank 33, and the vacuum pump 34; after the extrusion and vibration forming are completed, the valve 35 is closed; the pressing plate 1 moves upward, and one processing is completed.

[0026] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A negative pressure suction system for a prebaked anode green body forming device, characterized in that: A mold is provided, a pressing plate (1) is provided above the mold, a pressing head (2) is connected to the lower end of the pressing plate (1), a plurality of pressing heads (2) are provided, the pressing head (2) is provided as a cavity structure with an open upper end, the pressing plate (1) is connected to the middle part of the cavity bottom end of the pressing head (2); a negative pressure suction structure (3) is also provided, the negative pressure suction structure (3) passes through the pressing plate (1) and extends into the cavity of the pressing head (2), and the outer side of the negative pressure suction structure (3) forms a sealed state with the pressing plate (1), and the negative pressure suction structure (3) establishes a negative pressure environment for the closed space formed by the mold and the pressing plate (1) and extracts smoke in the closed space; the pressing head (2) is provided with a smoke exhaust port (21).

2. A negative pressure suction system for a prebaked anode green body forming device according to claim 1, characterized in that: The negative pressure suction structure (3) is provided with a branch pipe (31), a main pipe (32), a vacuum tank (33), a vacuum pump (34), a valve (35), and a gas collecting device (36); one end of the branch pipe (31) passes through the pressure plate (1) and extends into the cavity of the pressure head (2), and the outer side of the branch pipe (31) forms a sealed state with the pressure plate (1); the other end of the branch pipe (31) is connected to the main pipe (32), the main pipe (32) is connected to the vacuum tank (33), the vacuum tank (33) is connected to the vacuum pump (34), and the vacuum pump (34) is connected to the gas collecting device (36); a pressure gauge (37) is provided on the vacuum tank (33); and the valve (35) is provided between the vacuum tank (33) and the main pipe (32).

3. A negative pressure suction system for a prebaked anode green body forming device according to claim 2, characterized in that: A PLC control system (38) is also provided, and the valve (35), the pressure gauge (37), and the vacuum pump (34) are electrically connected to the PLC control system (38) respectively.

4. A negative pressure suction system for a prebaked anode green body forming device according to any one of claims 1 to 3, characterized in that: The smoke exhaust port (21) is configured as a smoke exhaust hole (21a) and a smoke exhaust notch (21b); the smoke exhaust hole (21a) is configured at the lower end of the pressure head (2); the smoke exhaust notch (21b) is configured at the upper edge of the pressure head (2); a plurality of smoke exhaust notches (21b) are configured; and the plurality of smoke exhaust notches (21b) are evenly arranged around the upper edge of the pressure head (2).

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